Not an item of Necessity?
Did you ever take a Helicopter ride or tour? It seemed justified then didn't it.
Know anyone who's been transported by a medical helicopter?
Rescued by helicopter?
Ever watch the news?
Got reliable electricity at your house?
Affordable fuel prices thanks to helicopter's vital role in north sea oil drilling?
Do they have police in the UK? I believe it is a necessity to their operations, which makes it an important contributor to your safety.
What about your national security?
Economy?
Just because you aren't an end used of helicopter services directly don't imagine they do contribute to your lifestyle.